pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
6.91	Organic Oxygen Acids and Nitrogen Bases	0	-1	O=C(Nc1ccccc1[N+](=O)[O-])c1ccccc1O	O=C(Nc1ccccc1[N+](=O)[O-])c1ccccc1[O-]	mol21710	O=C(Nc1ccccc1[N+](=O)[O-])c1ccccc1O